Hair brush



FIG. 1 is a bottom view of a hair brush showing my new design;

FIG. 2 is a front axial view thereof;

FIG. 3 is a rear axial view thereof;

FIG. 4 is a right axial view thereof;

FIG. 5 is a left axial view thereof; and,

FIG. 6 is a top perspective view thereof.

The broken line showing in the accompanying drawings is for the purpose of illustrating environmental features and forms no part of the claimed design. 

CLAIM The ornamental design for a hair brush, as shown and described. 